<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      const arr = ["isCss", "isJs", "noVb"];
      // forEeach,for
      find(arr, (v, i) => v.startsWith("is")); //isCss
      filter(arr, (v, i) => v.startsWith("is")); //['isCss','isJs']
    </script>
  </body>
</html>
